Ral - Designs Nivix security system

Indeed, Ral Zarek, who had ultimate responsibility for the innermost protections of the Firemind, had done an exemplary job. Deep inside Nivix, there was a control room, manned night and day by loyal Izzet watchmen. Any attempt to teleport, phase, or otherwise pass magically through the walls or windows would set alarm bells ringing. Any brute physical efforts, needless to say, would do the same. Ral himself checked the wards every evening, and made regular inspections to ensure they were properly maintained.

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The Gathering Storm, Chapter 1